i assume you want the stat for the heating system, would it not be easier to fit TRVs on the radiators ?
These are added to each individual radiator to permit different temperatures around the home. A Thermostatic Radiator Valve (TRV) controls the room temperature by reading the current air temperature and appropriately opening or closing the inlet valve to the radiator to achieve the preset temperature.
This is distinct to a standard valve on a radiator which maintains the temperature of that radiator, regardless of the room temperature.